2 35e1f40a 2021-03-14 op * Copyright (c) 2021 Omar Polo <op@omarpolo.com>
4 35e1f40a 2021-03-14 op * Permission to use, copy, modify, and distribute this software for any
5 35e1f40a 2021-03-14 op * purpose with or without fee is hereby granted, provided that the above
6 35e1f40a 2021-03-14 op * copyright notice and this permission notice appear in all copies.
8 35e1f40a 2021-03-14 op * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 35e1f40a 2021-03-14 op * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 35e1f40a 2021-03-14 op * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 35e1f40a 2021-03-14 op * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 35e1f40a 2021-03-14 op * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 35e1f40a 2021-03-14 op * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 35e1f40a 2021-03-14 op * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
18 eb2ed626 2021-10-07 op * Handles config and runtime files
21 786e6deb 2021-07-21 op #include "compat.h"
23 6cd6a9e1 2021-03-20 op #include <sys/stat.h>
24 65124267 2021-08-13 op #include <sys/types.h>
26 65124267 2021-08-13 op #include <dirent.h>
27 35e1f40a 2021-03-14 op #include <errno.h>
28 de2a69bb 2021-05-17 op #include <fcntl.h>
29 35e1f40a 2021-03-14 op #include <limits.h>
30 eb2ed626 2021-10-07 op #include <libgen.h>
31 35e1f40a 2021-03-14 op #include <stdio.h>
32 35e1f40a 2021-03-14 op #include <stdlib.h>
33 35e1f40a 2021-03-14 op #include <string.h>
34 35e1f40a 2021-03-14 op #include <unistd.h>
36 eb2ed626 2021-10-07 op #include "fs.h"
37 5a824be4 2021-07-13 op #include "pages.h"
38 328e7915 2021-09-19 op #include "telescope.h"
40 35e1f40a 2021-03-14 op static void die(void) __attribute__((__noreturn__));
41 fb4dc49f 2021-08-13 op static void send_file(uint32_t, FILE *);
42 35e1f40a 2021-03-14 op static void handle_get(struct imsg*, size_t);
43 5cbe1763 2021-08-13 op static int select_non_dot(const struct dirent *);
44 5cbe1763 2021-08-13 op static int select_non_dotdot(const struct dirent *);
45 fb4dc49f 2021-08-13 op static void handle_get_file(struct imsg*, size_t);
46 35e1f40a 2021-03-14 op static void handle_quit(struct imsg*, size_t);
47 740f578b 2021-03-15 op static void handle_bookmark_page(struct imsg*, size_t);
48 3a227e9a 2021-03-18 op static void handle_save_cert(struct imsg*, size_t);
49 288fd238 2021-04-25 op static void handle_update_cert(struct imsg*, size_t);
50 de2a69bb 2021-05-17 op static void handle_file_open(struct imsg*, size_t);
51 c7107cec 2021-04-01 op static void handle_session_start(struct imsg*, size_t);
52 c7107cec 2021-04-01 op static void handle_session_tab(struct imsg*, size_t);
53 2f524b17 2021-07-17 op static void handle_session_tab_title(struct imsg*, size_t);
54 c7107cec 2021-04-01 op static void handle_session_end(struct imsg*, size_t);
55 1304bbdd 2021-03-15 op static void handle_dispatch_imsg(int, short, void*);
56 bc10f6a5 2021-07-12 op static int fs_send_ui(int, uint32_t, int, const void *, uint16_t);
57 eb2ed626 2021-10-07 op static size_t join_path(char*, const char*, const char*, size_t);
58 eb2ed626 2021-10-07 op static void getenv_default(char*, const char*, const char*, size_t);
59 eb2ed626 2021-10-07 op static void mkdirs(const char*, mode_t);
60 eb2ed626 2021-10-07 op static void xdg_init(void);
62 bc10f6a5 2021-07-12 op static struct imsgev *iev_ui;
63 c7107cec 2021-04-01 op static FILE *session;
65 eb2ed626 2021-10-07 op /* WARNING: xdg_*_base variables are not initialized if ~/.telescope exists */
66 eb2ed626 2021-10-07 op static char xdg_config_base[PATH_MAX];
67 eb2ed626 2021-10-07 op static char xdg_data_base[PATH_MAX];
68 eb2ed626 2021-10-07 op static char xdg_cache_base[PATH_MAX];
70 eb2ed626 2021-10-07 op /* *_path_base variables are all equal to $HOME/.telescope if it exists */
71 fb3d08c1 2021-10-07 op char config_path_base[PATH_MAX];
72 fb3d08c1 2021-10-07 op char data_path_base[PATH_MAX];
73 fb3d08c1 2021-10-07 op char cache_path_base[PATH_MAX];
75 eb2ed626 2021-10-07 op char config_path[PATH_MAX];
76 fb3d08c1 2021-10-07 op char lockfile_path[PATH_MAX];
77 fb3d08c1 2021-10-07 op char bookmark_file[PATH_MAX];
78 fb3d08c1 2021-10-07 op char known_hosts_file[PATH_MAX], known_hosts_tmp[PATH_MAX];
79 fb3d08c1 2021-10-07 op char crashed_file[PATH_MAX];
80 fb3d08c1 2021-10-07 op char session_file[PATH_MAX];
82 35e1f40a 2021-03-14 op static imsg_handlerfn *handlers[] = {
83 35e1f40a 2021-03-14 op [IMSG_GET] = handle_get,
84 fb4dc49f 2021-08-13 op [IMSG_GET_FILE] = handle_get_file,
85 35e1f40a 2021-03-14 op [IMSG_QUIT] = handle_quit,
86 740f578b 2021-03-15 op [IMSG_BOOKMARK_PAGE] = handle_bookmark_page,
87 3a227e9a 2021-03-18 op [IMSG_SAVE_CERT] = handle_save_cert,
88 288fd238 2021-04-25 op [IMSG_UPDATE_CERT] = handle_update_cert,
89 de2a69bb 2021-05-17 op [IMSG_FILE_OPEN] = handle_file_open,
90 c7107cec 2021-04-01 op [IMSG_SESSION_START] = handle_session_start,
91 c7107cec 2021-04-01 op [IMSG_SESSION_TAB] = handle_session_tab,
92 2f524b17 2021-07-17 op [IMSG_SESSION_TAB_TITLE] = handle_session_tab_title,
93 c7107cec 2021-04-01 op [IMSG_SESSION_END] = handle_session_end,
96 35e1f40a 2021-03-14 op static void __attribute__((__noreturn__))
99 35e1f40a 2021-03-14 op abort(); /* TODO */
103 fb4dc49f 2021-08-13 op send_file(uint32_t peerid, FILE *f)
106 fb4dc49f 2021-08-13 op char buf[BUFSIZ];
109 fb4dc49f 2021-08-13 op r = fread(buf, 1, sizeof(buf), f);
111 fb4dc49f 2021-08-13 op fs_send_ui(IMSG_BUF, peerid, -1, buf, r);
112 fb4dc49f 2021-08-13 op if (r != sizeof(buf))
115 fb4dc49f 2021-08-13 op fs_send_ui(IMSG_EOF, peerid, -1, NULL, 0);
120 35e1f40a 2021-03-14 op handle_get(struct imsg *imsg, size_t datalen)
122 56e7efb4 2021-07-21 op const char *bpath = "bookmarks.gmi";
123 fb4dc49f 2021-08-13 op char path[PATH_MAX];
125 a2728733 2021-07-18 op const char *data, *p;
127 a2728733 2021-07-18 op struct page {
128 a2728733 2021-07-18 op const char *name;
129 56e7efb4 2021-07-21 op const char *path;
130 a2728733 2021-07-18 op const uint8_t *data;
132 a2728733 2021-07-18 op } pages[] = {
133 56e7efb4 2021-07-21 op {"about", NULL, about_about, about_about_len},
134 56e7efb4 2021-07-21 op {"blank", NULL, about_blank, about_blank_len},
135 56e7efb4 2021-07-21 op {"bookmarks", bpath, bookmarks, bookmarks_len},
136 56e7efb4 2021-07-21 op {"crash", NULL, about_crash, about_crash_len},
137 56e7efb4 2021-07-21 op {"help", NULL, about_help, about_help_len},
138 56e7efb4 2021-07-21 op {"license", NULL, about_license, about_license_len},
139 56e7efb4 2021-07-21 op {"new", NULL, about_new, about_new_len},
140 56e7efb4 2021-07-21 op }, *page = NULL;
142 35e1f40a 2021-03-14 op data = imsg->data;
143 56e7efb4 2021-07-21 op if (data[datalen-1] != '\0') /* make sure it's NUL-terminated */
145 56e7efb4 2021-07-21 op if ((data = strchr(data, ':')) == NULL)
146 56e7efb4 2021-07-21 op goto notfound;
149 56e7efb4 2021-07-21 op for (i = 0; i < sizeof(pages)/sizeof(pages[0]); ++i)
150 56e7efb4 2021-07-21 op if (!strcmp(data, pages[i].name)) {
151 56e7efb4 2021-07-21 op page = &pages[i];
155 56e7efb4 2021-07-21 op if (page == NULL)
156 56e7efb4 2021-07-21 op goto notfound;
158 eb2ed626 2021-10-07 op strlcpy(path, config_path_base, sizeof(path));
159 56e7efb4 2021-07-21 op strlcat(path, "/", sizeof(path));
160 56e7efb4 2021-07-21 op if (page->path != NULL)
161 56e7efb4 2021-07-21 op strlcat(path, page->path, sizeof(path));
163 56e7efb4 2021-07-21 op strlcat(path, "pages/about_", sizeof(path));
164 56e7efb4 2021-07-21 op strlcat(path, page->name, sizeof(path));
165 56e7efb4 2021-07-21 op strlcat(path, ".gmi", sizeof(path));
168 56e7efb4 2021-07-21 op if ((f = fopen(path, "r")) == NULL) {
169 56e7efb4 2021-07-21 op fs_send_ui(IMSG_BUF, imsg->hdr.peerid, -1,
170 56e7efb4 2021-07-21 op page->data, page->len);
171 56e7efb4 2021-07-21 op fs_send_ui(IMSG_EOF, imsg->hdr.peerid, -1,
176 fb4dc49f 2021-08-13 op send_file(imsg->hdr.peerid, f);
180 a2728733 2021-07-18 op p = "# not found!\n";
181 a2728733 2021-07-18 op fs_send_ui(IMSG_BUF, imsg->hdr.peerid, -1, p, strlen(p));
182 a2728733 2021-07-18 op fs_send_ui(IMSG_EOF, imsg->hdr.peerid, -1, NULL, 0);
185 fb4dc49f 2021-08-13 op static inline void
186 fb4dc49f 2021-08-13 op send_hdr(uint32_t peerid, int code, const char *meta)
188 fb4dc49f 2021-08-13 op fs_send_ui(IMSG_GOT_CODE, peerid, -1, &code, sizeof(code));
189 fb4dc49f 2021-08-13 op fs_send_ui(IMSG_GOT_META, peerid, -1, meta, strlen(meta)+1);
192 24a68158 2021-08-13 op static inline void
193 24a68158 2021-08-13 op send_errno(uint32_t peerid, int code, const char *str, int no)
197 24a68158 2021-08-13 op if (asprintf(&s, "%s: %s", str, strerror(no)) == -1)
200 24a68158 2021-08-13 op send_hdr(peerid, code, s == NULL ? str : s);
204 65124267 2021-08-13 op static inline const char *
205 65124267 2021-08-13 op file_type(const char *path)
207 fb4dc49f 2021-08-13 op struct mapping {
208 fb4dc49f 2021-08-13 op const char *ext;
209 fb4dc49f 2021-08-13 op const char *mime;
211 fb4dc49f 2021-08-13 op {"diff", "text/x-patch"},
212 fb4dc49f 2021-08-13 op {"gemini", "text/gemini"},
213 fb4dc49f 2021-08-13 op {"gmi", "text/gemini"},
214 fb4dc49f 2021-08-13 op {"markdown", "text/plain"},
215 fb4dc49f 2021-08-13 op {"md", "text/plain"},
216 fb4dc49f 2021-08-13 op {"patch", "text/x-patch"},
217 fb4dc49f 2021-08-13 op {"txt", "text/plain"},
218 fb4dc49f 2021-08-13 op {NULL, NULL},
222 65124267 2021-08-13 op if ((dot = strrchr(path, '.')) == NULL)
227 65124267 2021-08-13 op for (m = ms; m->ext != NULL; ++m)
228 65124267 2021-08-13 op if (!strcmp(m->ext, dot))
229 65124267 2021-08-13 op return m->mime;
235 5cbe1763 2021-08-13 op select_non_dot(const struct dirent *d)
237 5cbe1763 2021-08-13 op return strcmp(d->d_name, ".");
241 5cbe1763 2021-08-13 op select_non_dotdot(const struct dirent *d)
243 5cbe1763 2021-08-13 op return strcmp(d->d_name, ".") && strcmp(d->d_name, "..");
246 65124267 2021-08-13 op static inline void
247 65124267 2021-08-13 op send_dir(uint32_t peerid, const char *path)
249 65124267 2021-08-13 op struct dirent **names;
250 65124267 2021-08-13 op struct evbuffer *ev;
252 5cbe1763 2021-08-13 op int (*selector)(const struct dirent *) = select_non_dot;
253 24a68158 2021-08-13 op int i, len, no;
255 5d43215b 2021-08-13 op if (!has_suffix(path, "/")) {
256 5d43215b 2021-08-13 op if (asprintf(&s, "%s/", path) == -1)
258 5d43215b 2021-08-13 op send_hdr(peerid, 30, s);
263 5cbe1763 2021-08-13 op if (!strcmp(path, "/"))
264 5cbe1763 2021-08-13 op selector = select_non_dotdot;
266 65124267 2021-08-13 op if ((ev = evbuffer_new()) == NULL ||
267 5cbe1763 2021-08-13 op (len = scandir(path, &names, selector, alphasort)) == -1) {
269 65124267 2021-08-13 op evbuffer_free(ev);
270 24a68158 2021-08-13 op send_errno(peerid, 40, "failure reading the directory", no);
274 65124267 2021-08-13 op evbuffer_add_printf(ev, "# Index of %s\n\n", path);
275 65124267 2021-08-13 op for (i = 0; i < len; ++i) {
276 65124267 2021-08-13 op evbuffer_add_printf(ev, "=> %s", names[i]->d_name);
277 65124267 2021-08-13 op if (names[i]->d_type == DT_DIR)
278 65124267 2021-08-13 op evbuffer_add(ev, "/", 1);
279 65124267 2021-08-13 op evbuffer_add(ev, "\n", 1);
282 65124267 2021-08-13 op send_hdr(peerid, 20, "text/gemini");
283 65124267 2021-08-13 op fs_send_ui(IMSG_BUF, peerid, -1,
284 65124267 2021-08-13 op EVBUFFER_DATA(ev), EVBUFFER_LENGTH(ev));
285 65124267 2021-08-13 op fs_send_ui(IMSG_EOF, peerid, -1, NULL, 0);
287 65124267 2021-08-13 op evbuffer_free(ev);
292 65124267 2021-08-13 op handle_get_file(struct imsg *imsg, size_t datalen)
294 65124267 2021-08-13 op struct stat sb;
297 fb4dc49f 2021-08-13 op const char *meta = NULL;
299 fb4dc49f 2021-08-13 op data = imsg->data;
300 fb4dc49f 2021-08-13 op data[datalen-1] = '\0';
302 65124267 2021-08-13 op if ((f = fopen(data, "r")) == NULL) {
303 24a68158 2021-08-13 op send_errno(imsg->hdr.peerid, 51, "can't open", errno);
307 65124267 2021-08-13 op if (fstat(fileno(f), &sb) == -1) {
308 24a68158 2021-08-13 op send_errno(imsg->hdr.peerid, 40, "fstat", errno);
312 65124267 2021-08-13 op if (S_ISDIR(sb.st_mode)) {
314 65124267 2021-08-13 op send_dir(imsg->hdr.peerid, data);
318 65124267 2021-08-13 op if ((meta = file_type(data)) == NULL) {
320 65124267 2021-08-13 op send_hdr(imsg->hdr.peerid, 51,
321 65124267 2021-08-13 op "don't know how to visualize this file");
325 fb4dc49f 2021-08-13 op send_hdr(imsg->hdr.peerid, 20, meta);
326 fb4dc49f 2021-08-13 op send_file(imsg->hdr.peerid, f);
330 35e1f40a 2021-03-14 op handle_quit(struct imsg *imsg, size_t datalen)
332 2b409042 2021-09-15 op if (!safe_mode)
333 2b409042 2021-09-15 op unlink(crashed_file);
335 35e1f40a 2021-03-14 op event_loopbreak();
339 740f578b 2021-03-15 op handle_bookmark_page(struct imsg *imsg, size_t datalen)
345 740f578b 2021-03-15 op data = imsg->data;
346 740f578b 2021-03-15 op if (data[datalen-1] != '\0')
349 740f578b 2021-03-15 op if ((f = fopen(bookmark_file, "a")) == NULL) {
353 740f578b 2021-03-15 op fprintf(f, "=> %s\n", data);
358 bc10f6a5 2021-07-12 op fs_send_ui(IMSG_BOOKMARK_OK, 0, -1, &res, sizeof(res));
362 3a227e9a 2021-03-18 op handle_save_cert(struct imsg *imsg, size_t datalen)
364 3a227e9a 2021-03-18 op struct tofu_entry e;
368 3a227e9a 2021-03-18 op /* TODO: traverse the file to avoid duplications? */
370 3a227e9a 2021-03-18 op if (datalen != sizeof(e))
372 3a227e9a 2021-03-18 op memcpy(&e, imsg->data, datalen);
374 3a227e9a 2021-03-18 op if ((f = fopen(known_hosts_file, "a")) == NULL) {
378 3a227e9a 2021-03-18 op fprintf(f, "%s %s %d\n", e.domain, e.hash, e.verified);
383 bc10f6a5 2021-07-12 op fs_send_ui(IMSG_SAVE_CERT_OK, imsg->hdr.peerid, -1,
384 288fd238 2021-04-25 op &res, sizeof(res));
388 288fd238 2021-04-25 op handle_update_cert(struct imsg *imsg, size_t datalen)
390 288fd238 2021-04-25 op FILE *tmp, *f;
391 288fd238 2021-04-25 op struct tofu_entry entry;
392 288fd238 2021-04-25 op char sfn[PATH_MAX], *line = NULL, *t;
393 288fd238 2021-04-25 op size_t l, linesize = 0;
394 288fd238 2021-04-25 op ssize_t linelen;
395 288fd238 2021-04-25 op int fd, e, res = 0;
397 288fd238 2021-04-25 op if (datalen != sizeof(entry))
399 288fd238 2021-04-25 op memcpy(&entry, imsg->data, datalen);
401 288fd238 2021-04-25 op strlcpy(sfn, known_hosts_tmp, sizeof(sfn));
402 288fd238 2021-04-25 op if ((fd = mkstemp(sfn)) == -1 ||
403 288fd238 2021-04-25 op (tmp = fdopen(fd, "w")) == NULL) {
404 288fd238 2021-04-25 op if (fd != -1) {
412 288fd238 2021-04-25 op if ((f = fopen(known_hosts_file, "r")) == NULL) {
419 288fd238 2021-04-25 op l = strlen(entry.domain);
420 288fd238 2021-04-25 op while ((linelen = getline(&line, &linesize, f)) != -1) {
421 288fd238 2021-04-25 op if ((t = strstr(line, entry.domain)) != NULL &&
422 288fd238 2021-04-25 op (line[l] == ' ' || line[l] == '\t'))
424 288fd238 2021-04-25 op /* line has a trailing \n */
425 288fd238 2021-04-25 op fprintf(tmp, "%s", line);
427 288fd238 2021-04-25 op fprintf(tmp, "%s %s %d\n", entry.domain, entry.hash, entry.verified);
430 288fd238 2021-04-25 op e = ferror(tmp);
441 288fd238 2021-04-25 op res = rename(sfn, known_hosts_file) != -1;
444 bc10f6a5 2021-07-12 op fs_send_ui(IMSG_UPDATE_CERT_OK, imsg->hdr.peerid, -1,
445 3a227e9a 2021-03-18 op &res, sizeof(res));
449 de2a69bb 2021-05-17 op handle_file_open(struct imsg *imsg, size_t datalen)
451 de2a69bb 2021-05-17 op char *path, *e;
454 de2a69bb 2021-05-17 op path = imsg->data;
455 de2a69bb 2021-05-17 op if (path[datalen-1] != '\0')
458 de2a69bb 2021-05-17 op if ((fd = open(path, O_WRONLY | O_TRUNC | O_CREAT, 0644)) == -1) {
459 de2a69bb 2021-05-17 op e = strerror(errno);
460 bc10f6a5 2021-07-12 op fs_send_ui(IMSG_FILE_OPENED, imsg->hdr.peerid, -1,
461 de2a69bb 2021-05-17 op e, strlen(e)+1);
463 bc10f6a5 2021-07-12 op fs_send_ui(IMSG_FILE_OPENED, imsg->hdr.peerid, fd,
468 c7107cec 2021-04-01 op handle_session_start(struct imsg *imsg, size_t datalen)
470 c7107cec 2021-04-01 op if (datalen != 0)
473 c7107cec 2021-04-01 op if ((session = fopen(session_file, "w")) == NULL)
478 c7107cec 2021-04-01 op handle_session_tab(struct imsg *imsg, size_t datalen)
481 87e3e801 2021-07-17 op uint32_t flags;
483 c7107cec 2021-04-01 op if (session == NULL)
486 87e3e801 2021-07-17 op flags = imsg->hdr.peerid;
487 58df4f47 2021-07-17 op url = imsg->data;
488 58df4f47 2021-07-17 op if (datalen == 0 || url[datalen-1] != '\0')
490 58df4f47 2021-07-17 op fprintf(session, "%s", url);
492 87e3e801 2021-07-17 op if (flags & TAB_CURRENT)
493 2f524b17 2021-07-17 op fprintf(session, " current ");
495 2f524b17 2021-07-17 op fprintf(session, " - ");
499 2f524b17 2021-07-17 op handle_session_tab_title(struct imsg *imsg, size_t datalen)
501 2f524b17 2021-07-17 op const char *title;
503 2f524b17 2021-07-17 op title = imsg->data;
504 2f524b17 2021-07-17 op if (title == NULL) {
509 2f524b17 2021-07-17 op if (title[datalen-1] != '\0')
512 2f524b17 2021-07-17 op fprintf(session, "%s\n", title);
516 c7107cec 2021-04-01 op handle_session_end(struct imsg *imsg, size_t datalen)
518 c7107cec 2021-04-01 op if (session == NULL)
520 c7107cec 2021-04-01 op fclose(session);
521 c7107cec 2021-04-01 op session = NULL;
525 1304bbdd 2021-03-15 op handle_dispatch_imsg(int fd, short ev, void *d)
527 bc10f6a5 2021-07-12 op struct imsgev *iev = d;
530 ea080950 2021-07-20 op if (dispatch_imsg(iev, ev, handlers, sizeof(handlers)) == -1) {
532 eb2ed626 2021-10-07 op * This should leave a ~/.cache/telescope/crashed file to
533 ea080950 2021-07-20 op * trigger about:crash on next run. Unfortunately, if
534 ea080950 2021-07-20 op * the main process dies the fs sticks around and
535 ea080950 2021-07-20 op * doesn't notice that the fd was closed. Why EV_READ
536 ea080950 2021-07-20 op * is not triggered when a fd is closed on the other end?
539 ea080950 2021-07-20 op if ((fd = open(crashed_file, O_CREAT|O_TRUNC|O_WRONLY, 0600))
541 ea080950 2021-07-20 op err(1, "open");
543 ea080950 2021-07-20 op errx(1, "connection closed: %s", strerror(e));
548 bc10f6a5 2021-07-12 op fs_send_ui(int type, uint32_t peerid, int fd, const void *data,
549 bc10f6a5 2021-07-12 op uint16_t datalen)
551 bc10f6a5 2021-07-12 op return imsg_compose_event(iev_ui, type, peerid, 0, fd,
552 bc10f6a5 2021-07-12 op data, datalen);
555 eb2ed626 2021-10-07 op static size_t
556 eb2ed626 2021-10-07 op join_path(char *buf, const char *lhs, const char *rhs, size_t buflen)
558 eb2ed626 2021-10-07 op strlcpy(buf, lhs, buflen);
559 eb2ed626 2021-10-07 op return strlcat(buf, rhs, buflen);
563 eb2ed626 2021-10-07 op getenv_default(char *buf, const char *name, const char *def, size_t buflen)
566 eb2ed626 2021-10-07 op char *home, *env;
568 eb2ed626 2021-10-07 op if ((home = getenv("HOME")) == NULL)
569 eb2ed626 2021-10-07 op errx(1, "HOME is not defined");
571 eb2ed626 2021-10-07 op if ((env = getenv(name)) != NULL)
572 eb2ed626 2021-10-07 op ret = strlcpy(buf, env, buflen);
574 eb2ed626 2021-10-07 op ret = join_path(buf, home, def, buflen);
576 eb2ed626 2021-10-07 op if (ret >= buflen)
577 eb2ed626 2021-10-07 op errx(1, "buffer too small for %s", name);
581 eb2ed626 2021-10-07 op mkdirs(const char *path, mode_t mode)
583 444dad86 2021-10-07 op char copy[PATH_MAX+1], orig[PATH_MAX+1], *parent;
585 eb2ed626 2021-10-07 op strlcpy(copy, path, sizeof(copy));
586 444dad86 2021-10-07 op strlcpy(orig, path, sizeof(orig));
587 eb2ed626 2021-10-07 op parent = dirname(copy);
588 eb2ed626 2021-10-07 op if (!strcmp(parent, "/"))
590 eb2ed626 2021-10-07 op mkdirs(parent, mode);
592 444dad86 2021-10-07 op if (mkdir(orig, mode) != 0) {
593 eb2ed626 2021-10-07 op if (errno == EEXIST)
595 444dad86 2021-10-07 op err(1, "can't mkdir %s", orig);
600 eb2ed626 2021-10-07 op xdg_init(void)
602 eb2ed626 2021-10-07 op char *home, old_path[PATH_MAX];
603 eb2ed626 2021-10-07 op struct stat info;
605 eb2ed626 2021-10-07 op /* old path */
606 eb2ed626 2021-10-07 op if ((home = getenv("HOME")) == NULL)
607 eb2ed626 2021-10-07 op errx(1, "HOME is not defined");
608 eb2ed626 2021-10-07 op join_path(old_path, home, "/.telescope", sizeof(old_path));
610 eb2ed626 2021-10-07 op /* if ~/.telescope exists, use that instead of xdg dirs */
611 eb2ed626 2021-10-07 op if (stat(old_path, &info) == 0 && S_ISDIR(info.st_mode)) {
612 eb2ed626 2021-10-07 op join_path(config_path_base, home, "/.telescope",
613 eb2ed626 2021-10-07 op sizeof(config_path_base));
614 eb2ed626 2021-10-07 op join_path(data_path_base, home, "/.telescope",
615 eb2ed626 2021-10-07 op sizeof(data_path_base));
616 eb2ed626 2021-10-07 op join_path(cache_path_base, home, "/.telescope",
617 eb2ed626 2021-10-07 op sizeof(cache_path_base));
621 eb2ed626 2021-10-07 op /* xdg paths */
622 eb2ed626 2021-10-07 op getenv_default(xdg_config_base, "XDG_CONFIG_HOME", "/.config",
623 eb2ed626 2021-10-07 op sizeof(xdg_config_base));
624 eb2ed626 2021-10-07 op getenv_default(xdg_data_base, "XDG_DATA_HOME", "/.local/share",
625 eb2ed626 2021-10-07 op sizeof(xdg_data_base));
626 eb2ed626 2021-10-07 op getenv_default(xdg_cache_base, "XDG_CACHE_HOME", "/.cache",
627 eb2ed626 2021-10-07 op sizeof(xdg_cache_base));
629 eb2ed626 2021-10-07 op join_path(config_path_base, xdg_config_base, "/telescope",
630 eb2ed626 2021-10-07 op sizeof(config_path_base));
631 eb2ed626 2021-10-07 op join_path(data_path_base, xdg_data_base, "/telescope",
632 eb2ed626 2021-10-07 op sizeof(data_path_base));
633 eb2ed626 2021-10-07 op join_path(cache_path_base, xdg_cache_base, "/telescope",
634 eb2ed626 2021-10-07 op sizeof(cache_path_base));
636 eb2ed626 2021-10-07 op mkdirs(xdg_config_base, S_IRWXU);
637 eb2ed626 2021-10-07 op mkdirs(xdg_data_base, S_IRWXU);
638 eb2ed626 2021-10-07 op mkdirs(xdg_cache_base, S_IRWXU);
640 eb2ed626 2021-10-07 op mkdirs(config_path_base, S_IRWXU);
641 eb2ed626 2021-10-07 op mkdirs(data_path_base, S_IRWXU);
642 eb2ed626 2021-10-07 op mkdirs(cache_path_base, S_IRWXU);
646 eb2ed626 2021-10-07 op fs_init(void)
650 eb2ed626 2021-10-07 op join_path(config_path, config_path_base, "/config",
651 eb2ed626 2021-10-07 op sizeof(config_path));
652 eb2ed626 2021-10-07 op join_path(lockfile_path, cache_path_base, "/lock",
653 eb2ed626 2021-10-07 op sizeof(lockfile_path));
654 eb2ed626 2021-10-07 op join_path(bookmark_file, data_path_base, "/bookmarks.gmi",
655 eb2ed626 2021-10-07 op sizeof(bookmark_file));
656 eb2ed626 2021-10-07 op join_path(known_hosts_file, data_path_base, "/known_hosts",
657 eb2ed626 2021-10-07 op sizeof(known_hosts_file));
658 eb2ed626 2021-10-07 op join_path(known_hosts_tmp, cache_path_base,
659 eb2ed626 2021-10-07 op "/known_hosts.tmp.XXXXXXXXXX", sizeof(known_hosts_tmp));
660 eb2ed626 2021-10-07 op join_path(session_file, cache_path_base, "/session",
661 eb2ed626 2021-10-07 op sizeof(session_file));
662 eb2ed626 2021-10-07 op join_path(crashed_file, cache_path_base, "/crashed",
663 eb2ed626 2021-10-07 op sizeof(crashed_file));
669 6cc5fcfe 2021-07-08 op fs_main(void)
671 6cc5fcfe 2021-07-08 op setproctitle("fs");
675 35e1f40a 2021-03-14 op event_init();
677 bc10f6a5 2021-07-12 op /* Setup pipe and event handler to the main process */
678 bc10f6a5 2021-07-12 op if ((iev_ui = malloc(sizeof(*iev_ui))) == NULL)
680 bc10f6a5 2021-07-12 op imsg_init(&iev_ui->ibuf, 3);
681 bc10f6a5 2021-07-12 op iev_ui->handler = handle_dispatch_imsg;
682 bc10f6a5 2021-07-12 op iev_ui->events = EV_READ;
683 bc10f6a5 2021-07-12 op event_set(&iev_ui->ev, iev_ui->ibuf.fd, iev_ui->events,
684 bc10f6a5 2021-07-12 op iev_ui->handler, iev_ui);
685 bc10f6a5 2021-07-12 op event_add(&iev_ui->ev, NULL);
687 35e1f40a 2021-03-14 op sandbox_fs_process();
689 35e1f40a 2021-03-14 op event_dispatch();
696 be97d6e6 2021-08-15 op * Check if the last time telescope crashed. The check is done by
697 be97d6e6 2021-08-15 op * looking at `crashed_file': if it exists then last time we crashed.
698 be97d6e6 2021-08-15 op * Then, while here, touch the file too. During IMSG_QUIT we'll
702 b6171794 2021-07-20 op last_time_crashed(void)
704 be97d6e6 2021-08-15 op int fd, crashed = 1;
706 2b409042 2021-09-15 op if (safe_mode)
709 be97d6e6 2021-08-15 op if (unlink(crashed_file) == -1 && errno == ENOENT)
712 be97d6e6 2021-08-15 op if ((fd = open(crashed_file, O_CREAT|O_WRONLY, 0600)) == -1)
713 be97d6e6 2021-08-15 op return crashed;
716 be97d6e6 2021-08-15 op return crashed;
720 d0fd368a 2021-07-15 op lock_session(void)
722 d0fd368a 2021-07-15 op struct flock lock;
725 d0fd368a 2021-07-15 op if ((fd = open(lockfile_path, O_WRONLY|O_CREAT, 0600)) == -1)
728 d0fd368a 2021-07-15 op lock.l_start = 0;
729 d0fd368a 2021-07-15 op lock.l_len = 0;
730 d0fd368a 2021-07-15 op lock.l_type = F_WRLCK;
731 d0fd368a 2021-07-15 op lock.l_whence = SEEK_SET;
733 d0fd368a 2021-07-15 op if (fcntl(fd, F_SETLK, &lock) == -1) {
742 c6d03cf5 2021-04-25 op parse_khost_line(char *line, char *tmp[3])
746 c6d03cf5 2021-04-25 op for (ap = tmp; ap < &tmp[3] &&
747 c6d03cf5 2021-04-25 op (*ap = strsep(&line, " \t\n")) != NULL;) {
748 c6d03cf5 2021-04-25 op if (**ap != '\0')
752 c6d03cf5 2021-04-25 op return ap == &tmp[3] && *line == '\0';
756 3a227e9a 2021-03-18 op load_certs(struct ohash *h)
758 c6d03cf5 2021-04-25 op char *tmp[3], *line = NULL;
759 6cd6a9e1 2021-03-20 op const char *errstr;
760 ec1fa0b0 2021-04-25 op size_t lineno = 0, linesize = 0;
761 3a227e9a 2021-03-18 op ssize_t linelen;
763 3a227e9a 2021-03-18 op struct tofu_entry *e;
765 3a227e9a 2021-03-18 op if ((f = fopen(known_hosts_file, "r")) == NULL)
768 3a227e9a 2021-03-18 op while ((linelen = getline(&line, &linesize, f)) != -1) {
769 3a227e9a 2021-03-18 op if ((e = calloc(1, sizeof(*e))) == NULL)
774 c6d03cf5 2021-04-25 op if (parse_khost_line(line, tmp)) {
775 c6d03cf5 2021-04-25 op strlcpy(e->domain, tmp[0], sizeof(e->domain));
776 c6d03cf5 2021-04-25 op strlcpy(e->hash, tmp[1], sizeof(e->hash));
778 c6d03cf5 2021-04-25 op e->verified = strtonum(tmp[2], 0, 1, &errstr);
779 c6d03cf5 2021-04-25 op if (errstr != NULL)
780 c6d03cf5 2021-04-25 op errx(1, "%s:%zu verification for %s is %s: %s",
781 c6d03cf5 2021-04-25 op known_hosts_file, lineno,
782 c6d03cf5 2021-04-25 op e->domain, errstr, tmp[2]);
783 c6d03cf5 2021-04-25 op tofu_add(h, e);
785 ec1fa0b0 2021-04-25 op warnx("%s:%zu invalid entry",
786 ec1fa0b0 2021-04-25 op known_hosts_file, lineno);
792 3a227e9a 2021-03-18 op return ferror(f);